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InWin 07 Series
Purley Platform
Passive SAS/SATA Backplane User Manual
Supported Devices
Part Number Description
3RAMVI007000 IW-RS104-07 PASSIVE BACKPLANE MODULE (SAS Only)
2RAKVI001900 IW-RS104-07 HYBRID-OCULINK 4BAY BP
2RAKVI002000 IW-RS104-07 HYBRID-SLIMSAS 4BAY BP
2RAKVI002100 IW-RS110-07 HYBRID-OCULINK 12BAY BP
2RAKVI002200 IW-RS110-07 HYBRID-SLIMSAS 12BAY BP
Version: 0.3
History
Version Changes Date
0.1 First draft 2018/1/16
0.2 Change description according to HW change 2018/8/15
0.3 Added detailed LED Management Description 2018/8/20
Table Of Contents
1 Overview ............................................................................................................................ 4
2 Jumper Settings ................................................................................................................. 6
3 Connectors......................................................................................................................... 8
3.1 Disk Slot Connector .................................................................................................. 8
3.2 SFF-8643 Mini-SAS connector: ............................................................................... 10
3.3 Power Receptacle................................................................................................... 11
4 LED Behavior .................................................................................................................... 12
4.1 Disk Bay LED ........................................................................................................... 12
4.2 System Alarm LED .................................................................................................. 14
5. Smart Fan Control ............................................................................................................ 15
6. Firmware Upgrade ........................................................................................................... 18
1 Overview
InWin backplanes (without Expander) are high performance and cost effective
solution for supporting Intel Purley platform by adding NVMe support.
The passive backplanes support state-of-the art SAS3 12Gbps HDD/SSD and also
backward compatible with SAS 6Gbps, SATA 6Gps and SATA 3Gps HDD/SSD. Some of
the backplanes support NVMe SSD through either OcuLink x4 or SlimSAS x4
connectors.
Basically, one single SFF-8643 miniSAS connector can support up to 4 disk bays. Some
SKUs of backplane has 4 * OcuLink/SlimSAS connectors and 4 * U.2 connectors to
accommodate 4 * 2.5”NVMe SSDs per each backplane.
There are 12 pcs Fan connectors on backplane to support up to 12 pcs of Fan
modules as enclosure cooling system. It is implemented with smart fan control
feature to support wide variety of fan modules by auto-calibrating the installed fan
modules at system boot. This feature provides an efficient way to control the thermal
heat exhaustion by sensing the temperature on the backplane. The fan module
speeds up and down upon the temperature rises and falls in the enclosure. Further,
the backplane reserves a connector for adapting Fan PWM from motherboard so
backplane can leverage PWM request from motherboard and behave according to
the higher RPM number between MB and backplane.
Along with the smart fan control feature, a system alarming feature is also
implemented to alert users in case Fan module failure and/or system overheat occurs
by illuminating the LED indicator and beeping the buzzer at the same time. Users can
then informed of issue and take corresponding actions to resolve the issue according
to the failure type. As soon as the issue disappears the alarm stops.
IW-RS104-07 SAS Only BP
IW-RS104-07 SAS/NVMe Hybrid BP (Oculink)
IW-RS104-07 SAS/NVMe Hybrid BP (SlimSAS)
IW-RS110-07 SAS/NVMe Hybrid BP (Oculink)
IW-RS110-07 SAS/NVMe Hybrid BP (SlimSAS)
2 Jumper Settings
Jumpers on backplane are for function configuration setting or failure indication purpose.
The definitions of the Jumpers on the backplane are as below.
Jumper
Name
Function Details Model
JD1 MCU Programming Header For Programming MCU
Firmware
IW-RS104-07
IW-RS110-07
JM3
Setting Function
1 FAIL LED +
2 FAIL LED –
FAN FAIL:
LED blinks in 0.5Hz(1s on and
1s off) when the fan module
speed is going down below
75% of its expected RPM
OVER-TEMP:
LED blinks in 2Hz(0.25s on
and 0.25s off) when the
temperature on backplane is
>= 45C
Both Failures:
LED steady ON
IW-RS104-07
IW-RS110-07
JM2
Setting Function
1-2 Shunted SGPIO Enabled
2-3 Shunted SGPIO Disabled
Not Set Auto
Enable:
Disk RED LEDs behave
following SGPIO signal from
RAID/HBA.
Disabled:
Disk RED LEDs does not
function.
Note:
SGPIO setting is for SAS only.
IW-RS104-07
IW-RS110-07
JM1
Pin Function
1 PWM input
2 RPM output
3 GND
JM1 allows external PWM
source input to backplane.
Smart Fan Control module
generates higher PWM value
to fan modules by detecting
the external PWM and
comparing with the
calculated PWM level.
This feature enables a way
for backplane to collaborate
with Motherboard
conducting best thermal
solution when Fan modules
are connected to backplane.
IW-RS104-07
IW-RS110-07
FAN1 ~
FAN12
For connecting to Fan Modules.
The backplane supports up to 12
Fan modules
Fan modules connected to
backplane are controlled by
onboard MCU. Smart Fan
Control feature is
implemented to provide
efficient Fan control.
IW-RS104-07
IW-RS110-07
NVME1 ~
NVME10
NVMe interfaces for connecting
to NVMe HBA.
2 types of NVMe interfaces
to opt for accommodating
the system need.
x4 Oculink or x4 SlimSAS can
be selected. Each NVMe
interface support one x4
NVMe SSD.
IW-RS110-07
3 Connectors
3.1 Disk Slot Connector
The Backplane is equipped with numbers of disk connectors (SFF-8482/SFF-
8639(aka U.2)) supporting SATA 3G, 6G, SAS 6G and 12G HDD/SSD for pure SAS
SKU. And, further supporting NVMe for SAS/NVMe Hybrid SKU.
Different model equipped with different type and different number of disk slot
connectors according to design and application. Please refer to below tables.
Model Disk Slot Backplane Type Supported Disk
IW-RS104-07 / SAS 4 Horizontal Type SATA, SAS (SFF-8482)
IW-RS104-07 / Hybrid 4 Horizontal Type SATA, SAS, NVMe (SFF-8639)
IW-RS110-07 / Hyhrid 10 Vertical Type SATA, SAS, NVMe (SFF-8639)
Name Function Details Model
Disk1 ~
Disk10
Connecting SATA/SAS
HDD/SSD or NVMe SSD.
For IW-RS104-07:
SAS only SKU -
4 * SFF-8482 connectors to support
up to 4 SATA/SAS HDD/SSD.
Hybrid SKU -
4 * SFF-8639 connectors to support
up to 4 SATA/SAS HDD/SSD or NVMe
SSD.
For IW-RS110-07:
10 * U.2(SFF-8639) connectors to
support SATA/SAS/NVMe disks.
SATA/SAS is routed to SFF-8643
miniSAS-HD.
IW-RS104-07
IW-RS110-07
NVMe is routed to Oculink/SlimSAS
connector.
NVME1 ~
NVME10
NVMe interfaces for
connecting to NVMe
HBA/RAID Controller.
2 types of NVMe interfaces to
choose for accommodating the
system need.
x4 Oculink or x4 SlimSAS can be
selected. Each NVMe interface
support one NVMe SSD.
IW-RS104-07
IW-RS110-07
3.2 SFF-8643 Mini-SAS connector:
Different model of backplane is equipped with different number of miniSAS
connector. All the backplanes support data access speed up to 12Gbps SAS3.
All the miniSAS connectors are directly wired to the disk slot connectors. Each
miniSAS connector supports up to 4 disks
Model Number of miniSAS HD Note
IW-RS104-07 1
IW-RS110-07 3 3rd miniSAS HD support 2
disks only.
3.3 Power Receptacle
2 power connector implementation. One for 5Vdc and another for 12Vdc
Model Number of Power connector Note
IW-RS104-07 2 2*4 for 12Vdc
2*3 for 5Vdc
IW-RS110-07 2 2*4 for 12Vdc
2*3 for 5Vdc
4 LED Behavior
4.1 Disk Bay LED
There are 3 colors of LEDs for each bay to indicate HDD status by illuminating in
different color and format.
Blue LED:
Disk Insertion Indicator –
Turned on whenever disk drive is properly installed.
Green LED:
Activity indicator –
Stay off when idle and blinking (~8 Hz) whenever disk drive is being accessed.
RED LED:
Fail and Locate indicator –
Turned steady on when disk failure occurs. Blinking (1 Hz) when locating Disk,
RAID rebuild and RAID consistent check.
There are 2 parts of LED Management on the backplane. One is for SAS and
another is for NVMe. Please note that the disk slots can only accommodate
SAS/SATA or NVMe disk at a time since they share the same disk connector.
For SAS application, The LEDs behave by following SGPIO signal coming through
sideband bus inside the SFF-8643 cables. Please refer to Section 2 for SGPIO
settings. When SGPIO Jumper setting is enabled the LEDs behave according to
the SGPIO signals. When SGPIO is disabled, the RED LEDs (for Locate and Fail) do
not behave while the GREEN LEDs (for Activity) behave according to the signal
from P11 (READY LED) of the disk connectors.
For NVMe application, The LEDs behave according to the VPP over I2C signals
from NVMe host controllers through sideband bus of Oculink or SlimSAS cables.
Whenever the NVMe host controller support VPP over I2C, the RED LEDs behave
Locate, Fail and Rebuild signals following VPP signals on the I2C bus. The Green
LEDs (for Activity) behave according to the signal from P11 (Activity) of the disk
connectors.
Examples of NVMe connections to Broadcom RAID/HBA controller. Each pair of
VPP over I2C signal supports 2 pieces of NVMe disks LED management. The I2C
bus is leaded to odd-number NVMe connector (Oculink or SlimSAS) to manage
its corresponding and the following NVMe disks. For example, NVMe1 and
NVMe2 LED management signal is form NVMe1 connector’s sideband I2C bus,
NVMe3 and NVMe4 LED management signal is from NVMe3 connector’s
sideband I2C bus and …etc.
4.2 System Alarm LED
There is a FAIL LED design on the Backplane to indicate Fan Fail and Over-
Temperature. Lead 2.5mm 2-pin jumper JM3 (1/+, 2/-) to front panel for
indicating system fault.
Fan Fail:
When any fan module RPM is lower than 75% of the expected speed the Fan Fail
is triggered and the Fail LED blinks in 0.5Hz rate. Goes off when the issue is
resolved or disappeared.
Overheat:
When the system temperature at the backplane area is going beyond 45°C the
Temp Fail triggered and Fail LED blinks in 2Hz rate. Goes off when temperature is
going under 45°C.
Overheat & Fan Fail:
Fail LED stays steady on when both events triggered at the same time.
5. Smart Fan Control
InWin’s Backplane is designed with Smart Fan Control feature by automatically
detecting the existences of the Fan Modules and intelligently control the Fan RPM
per the system temperature being detected by 2 thermal sensors on the
backplane.
Two PWM sources onboard to control 12 fan modules. An external PWM source
(From Motherboard) as a reference input for determining the output PWM duty
cycle when it is connected.
PWM source of Fan modules are list as below. There are 2 PWM sources from
MCU.
PWM1: Fan1, 2, 5, 6, 9, 10
PWM2: Fan3, 4, 7, 8, 11, 12
How it works?
1. Fan module auto-calibration triggered in every system boot. The thermal
profile would then be recorded and used until next reboot.
2. Backplane starts fan calibration and calculates the corresponding PWM duty
cycle for each level. There are totally 8 speed levels to be sensed and used
until next system boot.
3. The 8 levels of fan speed are mapped to the temperature readings detected
by thermistor spreading from 25 to 45 °C in 3.75 degree C step.
4. In normal operation, when the system temperature changes to next level, the
fan module would change speed accordingly. And, the Fan failure alarm
would be triggered when the RPM of the Fan module is dropped lower than
75% of its expected speed.
5. The fan module calibration and thermal profile are as below.
6. When an external PWM source joins, the output PWM duty is determined by
comparing the internal calculated PWM and external PWM and then select
whichever is higher as the output PWM to the fan modules.
6. Firmware Upgrade
The passive backplanes are planted Nuvoton M058 series MCUs for hosting disk
LED indication, Fan speed control and system fail alarm. These MCUs are
preprogrammed in manufacturing. In most cases, the MCUs are not required to
reprogram unless there is issue needed to fix.
How to upgrade firmware?
1. Require Nuvoton ARM Cortex-M0 programming tool. Nu-Me or Nu-Link and
install Nuvoton ICP Programming tool software.
2. Connect Nu-Link USB end to a host and the SWD end to Backplane ICE
connector for each MCU.
3. Make sure device is connected and select the binary file being programmed
and then click on Start button to program firmware.
4. Please refer to http://www.nuvoton.com/resource-
files/NuLink_Adapter_User_Manual_EN_V1.01.pdf for more details.